Do they have any references about the true face of Satoshi Nakamoto to make that statue close to reality?
No, they have no verifiable identity of Satoshi Nakamoto other than his anonymity with an online worker-style veil. Satoshi's anonymity is still maintained to this day and I'm sure it will be the same for a long time and this concept may be quite memorable for everyone.
with reflective face surface that will show face of each person that looks at this figure, representing famous phrase ''we are all Satoshi.''
But overall, this idea will really help the promotion of bitcoin in some places like this where bitcoin is legal.
Perhaps, that's why some people believe that the idea of a Satoshi statue will succeed in attracting people there to know, invest and adopt it.